Abstract: A system for measuring forces from a rotating object is presented. In one aspect, the measurement system has a plurality of strain sensors that are configured to attach to the sidewall of a tire of a vehicle and measure the strain on the sidewall. The system can also have a data processor to relate the strain on the sidewall to the normal force exerted on the driving surface from the tire.

Abstract: A system for measuring forces from a rotating object is presented. In one aspect, the measurement system has a plurality of strain sensors that are configured to attach to the sidewall of a tire of a vehicle and measure the strain on the sidewall. The system can also have a data processor to relate the strain on the sidewall to the normal force exerted on the driving surface from the tire.

Abstract: The present invention relates to a safety output device for use in a power converter that includes a converter main body adapted for outputting a direct-current electric power at a predetermined voltage. The safety output device is adapted for being associated with an electricity consuming device that is powered by the power converter and comprises a wire set adapted for being electrically connected to the converter main body, a sensing controller for measuring a voltage difference in the wire set, and a switch adapted for being actuated by the sensing controller to permit electric conduction from the converter main body to the electricity consuming device when the voltage difference is detected to be substantially equal to the predetermined voltage.